Device for collecting filamentary materials



Oct. 9, 1945. 1 J. TAYLOR 2,386,411-

DEVICES FOR COLLECTING FILAMENTARY MATERIALS Filed April 17, 1943 2/ INVENTOR. 51 1Q BY Baez-er .7. 7:4 202 ATTORNEY.

time; on. 9, 1945 Darren STATES: PATENT OFFICE .l'. Taylon zfi i i ti Del 'assignor to American Viscose Corporation, DeL, a corporation of Delaware Application April 17, 1943, Serial No. 483,507

9Claims.

This invention relates to arrangements for collecting filamentary material and is particularly concerned with the collectin of the filaments while submerged under liquid, such as water.

From any 'one of various reasons, it may be.

age and severe-damage by wear as they pass over the guides associated with the collecting or winding drum. Collecting under liquid may be desirable with filaments and fibers other than freshly spun filaments and fibers. For example,

filaments of an extremely abrasive character may be collected under liquid to reduce wear on guides.

In addition, filaments andfibers tending to be brittle, such as glass, may preferably be collected under liquid.

Heretofore, traverse guides having filaments guiding channels or relatively short length have been employed in collecting-filaments under liquids. '-Such guides have several disadvantages. One of themost important isthe fact that the whipping of the yarn and the turbulence of the liquid which is caused by the reciprocation of the guide within the liquid, and particiflarly at the ends of the traverse, stroke, give rise to a wide variation of tension in the filaments. This variation in tension causesvariation in the properties along the length of the filaments. .In additlon, where extremely fine diameter filaments 40 within a yoke 8 which-depends from and is fixed- 'lysecuredtoastationary supportilinthefornr or'filaments which are highly susceptible to breakage are being collected even under liquid, such short length channel guides do not adequately protect the filaments from breakage and excessive wear, especially where high speeds of take-up are involved. t

It is an object of this invention toprovidefan 4 arrangement for collection of filaments under liquids either in the form of a yarn-like blmdle of filaments or in the form of a thin sheet-like web or intercrossing filaments in which a novel form of traversing guide is provided which has a long channel length and is mounted in a novel fashion. Other objects and advantages will be apparent from the description hereinafter.

Figure 1 is an elevation showing the invention applied within a spinning bath,

Figure 2 shows a modification,

Figure 3 is a section taken on line IlIlIl of V Figure 2,

Figure 4 is a cross-section taken on lines IV-lV of Figure 2,

Figure 5 is a cross-section taken on lines V-V of Figure 2,

Figures is an end View of a modified form of traverse'guide,

Figure 7 is a plan view of another modification of the invention,

' Figure 8 is an elevation of the arrangement of Figure 7, a lubricant and protects the filaments from break- Figure 9 is a plan view of amodification; and

Figure 10 is a vertical section through the embodiment of Figure 9.

Figure 1 shows the invention as applied to the spinning of ,filaments', and collecting them as a thin sheet-like web 01' inter-crossed filaments. This arrangement is applicable to filaments with any diameter but is particularly advantageous when applied to the collecting of a wound band of highly intercrossed filaments of extremely small diameters from A to 25 microns in diameter, such as disclosed in the application for patent of Robert J. Taylor, Serial Number 479,889, filed March 20, 1943. In Figure 1, there is shown one 80 spinning station of a spinning machine along the as spinneret and the traverse guide are submerged inthespinningbathiwhichisdispcsedina trough Sextendingthelengthofthemachine.

The end of the guide I nearest the spinneret may be pivotally mounted at 1 upon a vertical axis ofabar orrailextendin the lengtliof themaover the spinning bath. The other end of the tube is supported slidahly within a yoke Ill depending from the traverse rail l l which extends along the length ,of the.machine and which is reciprocated lengthwise. In this embodiment,the traverse guide 3 is substantially oi the same inside diameter throughout its length and no condensation oi the filament bundle occurs except as a resultot winding upon the core 4 which causes condensationtoa thinweb ofintercrossed 1 V.

. In the drawing, illustrative of the invention, the splnneretreduces whipping and turbulence This one station or unit'comprises 9.

open end of the guide.

all the way from the open discharge end of the traverse guide back to the spinneret, thus minimizing variation in tension within the filaments spun. The traversing of the filamentary bundle has been found to produce more extensive intercrossing of the filaments, especially of large diameter filaments, as compared to collection without traversing oi the filament web or sheet as it approaches the take-up device.

In Figure 2, a modified form of the invention is shown applied to a filamentary bundle obtained from a source of supply other than a spinneret within a spinning bath. In this embodiment, a tow or other bundle of untwisted filaments, preferably continuous, is drawn from a suitable source of supply over the feeding rolls i2 and I! from which it is directed downwardly to a bath of liquid 13 within a suitable trough H or other receptacle. n the way from the delivery rolls l2 and 12' to the bath l3, the filamentary bundle passes over a guide l5 which may be charged elec-,

trostatically. Where the filaments are of a hydrophobic character, this guide need not be charged by any extrinsic means as in that case, the guide may be made of a suitable material which tends to develop a static charge upon the filaments as they rub over it. The best material for the guide, in the latter instance, depends upon the particular material of which the filaments are made, glass being highly suitable with such filaments as those of Vinyon' (copolymers of vinyl chloride and vinyl acetate). The purpose of this electrostatically charging guide is to cause the filaments to fiuif out as a result of electrical repellence. After entering the bath, the filaments pass over the rotatable guide roll iiia through the mouth of a traverse guide i6 whose crosssection varies gradually along its length as illustrated by the cross-sections shown in Figures 3, 4 and 5 in order to condense the bundle to a more or less sheet-like ribbon or web by the time it approaches the winding drum d which is operated at the same linear peripheral speed as the delivery rolls l2 and i2. The entrance end of the guide may be supported for pivotal motion in the same manner as shown in Figure 1. In addition, the entrance may be provided with a flare ii in this case since the additional turbulence caused by the flare is expended upon completely set filaments and not upon freshly spun filaments as in Figure 1. In Figure 2, the guide rests upon motion. The guide of Figure 2 may be replaced with a funnel tube of circular cross-section having a substantially continuous reductionin diameter throughout its length where it is desired to condense the filamentary bundle to a yamlike structure rather than a sheet-like web at the point of winding. The end view or such a guide 20 looking at the small end would be as shown in Figure 6 where the wall I! and the fork lever I! for traversing the guide is shown. In this arrangement, the electrostatically charging guide l5 of Figure 2 may be omitted since thereis no advantage in flufilng out the filamentary which may take the form bundle.

A modified form of condensing guide is shown in Figures 7 and 8, in which the vertical dimension is first condensed without change of the horizontal dimension of the uide but adjacent the discharge end thereof, the horizontal dimension increases while the vertical dimension conshown in' Figure 9 in which the traverse rail Ii is provided with a roller 22 which serves as a follower in the groove 23 or the helical cam 2d of a drum rotated upon a suitable shaft 25.

While preferred embodiments of the invention have been disclosed, it is to be understood that changes and variations maybe made without a supporting wall l8 which may extend the I length of the bath. The reciprocating motion i6 by means oi-a depending forked lever is secured to the rail H and more particularly shown in Figure 5.

As shown in Figure 2, the traversing guide It may be tilted at an angle so that its discharge end extends outside the bath somewhat and the take-up drum 4 may be entirely outside the bath. The traveling filamentary bundle carries sufficlent lubricating liquid through the guide IE to protect the filaments from rubbing against the In initially lacing up the tension should be applied to the filaments as they are brought to the winding drum 4 so that they are free to fan out in the guide channel It and to intercross in haphazard, fashion under .the

influence of the turbulence in the channel IS.

The guide l6 shown in Figure 2 serves to condense the filaments to a sheet-like weband has the advantage of reducing turbulence by presenting a reduced profile to resist the traverse device, but slight l of the traverse rail H is transmitted to the guide departing from the spirit and scope of the invention.

What I claim is:

1. In apparatus for collecting filamentary material, a container for receiving a body of liquid, means for introducing a filamentary bundle into the liquid in said container, a winding core, a long hollow guide member in said container substantially entirely under the body of liquid therein for conducting the filamentary bundle to the core,

said member being pivotally mounted near its entrance end, and means for-traversing its discharge end with respect to the core.

2. In apparatus for collecting filamentary material, a container for receiving a body of liquid, means for introducing a filamentary bundle into the liquid, a winding core at least partially immersed in the body of liquid, a long hollow cylindrical guide member substantially entirely under the body of liquid for conducting the filamentary bundle to the core, said member being pivotally mounted near its entrance end, and means for traversing its discharge end with respect to the 3. In apparatus for collecting filamentary material, a container for receiving a body of liquid,

-mersed in the body the liquid, a winding core pivotally mounted near its entrance end, and means for traversing its discharge end with respect to the core.

4. In apparatus for collecting filamentary material, a container for receiving a body of liquid, means for introducing a filamentary bundle into the liquid, a winding core at least partially imof liquid and rotatable on an axis, a long hollow condensing guide member substantially entirely under the body of liquid for conducting the core, said'member being pivotally mounted near its entrance end and having an internal crosssection which gradually changes from a substantially circular section at its entrance end to an opening at its discharge end elongated in a direction generally parallel to the core axis, and means for traversing its discharge end with respect to the core in the general direction of its elongated dimension.

5. In a spinning machine, a container for receiving a liqui spinning bath, a spinneret in the liquid, a winding core, a long hollow guide member substantially entirely under the body of liquid for conducting the filamentary bundle from the spinneret to the core, said member being pivotally mounted near its entrance end, and means for traversing its discharge end with respect to the core. I

6. In a spinning machine, a container for receiving a liquid spinning bath, a spinneret in at'least partially immersed in the body of liquid, a long hollow cylindrical guide member substantially entirely under the body of liquid for conducting the filamentary bundle from the spinneret to the core, said member being pivotally mounted near its entrance end, and means for traversing its discharge end with respect to the core.

'7. In a spinning machine, ceiving a liquid spinning bath, a spinneret in the liquid, a winding core at least partially imfilamentary bundle to the a container for re-.

the core;

. cross-section which mersed in the body of liquid, a long hollow condensing guide member substantially entirely under the body of liquid for conducting the filamentary bundle from at least one transverse cross-sectional area of the guide member diminishing in the direction of travel of the bundle therethrough, said member being pivotally mounted near its entrance end, and means for traversing its discharge end with respect to the core.

8 In a spinning machine, a container for receiving a liquid spinning bath, a spinneret in the liquid, a winding core at least partially immersed in the body of liquid and rotatable. on an axis, a long hollow condensing guide member substantially entirely under the body of liquid for conducting the filamentary bundle from the spinneret to the core, said member being pivotally mounted at its entrance end and having a tapered ehanges from a substantially circular cross-section at its entrance to an opening at its discharge end elongated in a direction generally parallel to the core axis, and means for-traversing its discharge end with respect to th core in the general direction of its elongated dimension.

9. In a spinning machine, a container for receiving a liquid spinning bath, a spinneret in the liquid, a winding core at least partially immersed in the body of liquid, 9. long hollow guide member substantially entirely under the body of liquid for conducting the filamentary bundle from the spinneret to the core, said member being pivotally mounted. near its entrance end and having a cross-section of substantially circular shape throughout its length but decreasing from its entrance end to its discharge end, and means for traversing its discharge end with respect to ROBERT J. TAYLOR.

the spinneret to the core, dimension of the internal. 

